Preface. Part 1: Performance and Modelling. Impact of the Timer-CU of the AAL2 Protocol on Traffic Performance within the UTRAN; R. Makke, et al. CMA and PRMA Analytical Models for Voice Users in Satellite-UMTS Systems; A. Ibrahim, S. Tohme. Wireless Scheduling Approaches and Practical Implementation Issues; C. Stepping.Performance Evaluation of Service Connectivity in Mobile Augmented Reality; T. Turunen,et al. Reliable Multicast in Mobile Networks; P. Tiihonen, P. Hiirsalmi. Effect of Delays on TCP Performance; A. Gurtov. Part 2: Quality of Service. Priority-based Transmission in IEEE 802.11 Networks; T. Janczak, J. Wozniak. A Service Discipline for Support of IP QoS in IEEE802.11 Networks; A. Grilo, et al. QoS/GOS Management Measurements in IP/ATM and Wireless Environments; K. Heikkinen, et al. Part 3: Cellular Systems. Building Mobile Intranets Over The UMTS; C.F. Grecas, et al. Enhancing Packet Data Access in WCDMA; J. Peisa, et al. Part 4: Wireless Systems. 4G Mobile Network Architecture; K. Ikkela, et al. Wireless LANs and Regional Networking; J. Ikonen, J. Oksanen. Spatial Reuse in Wireless LAN Networks; K.A. Agha, L. Viennot. Part 5: Voice over IP. Using SIP Extensions for Signalling in Stream Service System; R. Lehtonen, et al. Voice Over IP Implementation Using Session Initiation and Media Gateway Control Protocols; O. Kauranen, J Kellokoski Part 6: Services. Future Scenarios on Bluetooth: Effects on Value Networks and Business Models; L.-M. Sainio, T. Sikioe. Developing a User Centric MultiSphere Model for Mobile Users Using a Visual Cell Platform; S. Hickey, P. Pulli Supporting Secure and Transparent Delegation in theCORBA Proxy Platform &pgr;2; Z. Nochta, et al. Wireless Micro-payment System in Networks; J. Karvonen, P. Pulli.